Justice for All

    An estimated 5.1 billion people, about two-thirds of humanity, cannot get fair and timely solutions to their legal problems, and nearly a third of the world's 11.6 million prisoners in 2024 were still waiting to be tried or sentenced.

    Updated October 15, 2026. Written from the sources listed below, not independently peer-reviewed.

    Take a guess first

    Of all the people held in prisons worldwide in 2024, how many had not yet been sentenced?

    5.1 billion

    People without meaningful access to justice

    About two-thirds of the world's population. A one-off estimate led by the World Justice Project for the Task Force on Justice, from surveys and other data in over 100 countries; its sub-groups overlap.

    Data year 2019. Source: Pathfinders for Peaceful, Just and Inclusive Societies / NYU Center on International Cooperation, via ReliefWeb, 2019

    3.6 million

    People in prison who have not been sentenced

    Nearly a third of the 11.6 million people held in detention worldwide in 2024. The share has stayed at around 30% since 2015.

    Data year 2024. Source: United Nations Department of Economic and Social Affairs, 2026

    65%

    Countries with overcrowded prisons

    Share of countries where prisoners outnumber official prison capacity (2024 or latest year). About one in four countries operate at more than 150% of capacity.

    Data year 2024. Source: United Nations Department of Economic and Social Affairs, 2026

    The numbers

    Share of prisoners worldwide who are unsentenced
    0%10%20%30%40%50%29%201531%2023

    UNODC global estimates reported in the UN SDG Extended Report 2025 (indicator 16.3.2). Only the two years reported there are shown. The 2026 edition describes the share as stable at around 30% from 2015 to 2024.

    No progress on pre-trial detention since 2015

    Target 16.3 has no numerical goal for 2030. Its most widely reported indicator, the share of prisoners who have not been sentenced, has stayed around 30% between 2015 and 2024, while the number of people in detention rose from 11.1 million to 11.6 million and prisons in two-thirds of countries hold more people than they were built for.

    Who is left behind

    Are we making progress?

    Instead of one “percent solved” score, DO GOOD rates three separate dimensions. A problem can have mature solutions that still reach too few people. These ratings are an editorial reading of the sources on this page, not a measured index.

    Outcome progress

    Has the situation improved in the real world?

    Low

    The share of prisoners awaiting trial or sentence has not changed at global level since 2015 and overcrowding affects two-thirds of countries. There is no repeated global measure showing that more people can now resolve their civil and administrative problems.

    Solution maturity

    How mature and validated are the available solutions?

    Moderate

    Legal aid, community-based advice and paralegals are established approaches with documented returns in some settings, such as $6 returned for every $1 spent on community advice officers in South Africa. Most evaluations come from a small number of countries, and less is known about what works at national scale in low-income settings.

    Confidence in the data

    Low

    Prison statistics are collected every year but come directly from only about 110 countries, and national definitions differ. The global justice gap rests on a single 2019 estimate with overlapping categories, and the dispute resolution indicator is too new to show trends.

    Current trajectory

    Stalling

    The global share of unsentenced prisoners has stayed around 30% for a decade, with improvement in Latin America and the Caribbean offset by a rise in Central and Southern Asia. Measurement of everyday legal needs is expanding, but there is no evidence yet of a global narrowing of the justice gap.

    Why this matters

    Access to justice means that people can understand their rights and get a fair, affordable and timely solution when something goes wrong: a dispute with a landlord or employer, a land or family conflict, a debt, a crime against them or a criminal charge against them. When this fails, problems grow into lost jobs, homes, health and income. A 2019 global estimate by the Task Force on Justice put the number of people who lack meaningful access to justice at 5.1 billion, about two-thirds of the world's population. The figure combines overlapping groups: 1.5 billion people who could not resolve an everyday justice problem, 4.5 billion who lack basic legal tools such as identity papers or proof of land rights, and 253 million living in extreme injustice such as modern slavery, statelessness or conflict.

    Most legal problems are civil or administrative, and most people never take them to a court or other formal body: only 17% of people surveyed by the World Justice Project said they would turn to a third party to mediate or decide a problem. The World Justice Project estimates that 1.4 billion people have unmet civil and administrative justice needs, and that legal problems cost individuals the equivalent of 1.7% of GDP on average. In criminal justice, about 3.6 million people were held in pre-trial detention in 2024, many of them in overcrowded prisons, and in lower-income countries fewer than one in ten legal needs is met.

    How access to justice is measured

    SDG target 16.3 asks countries to promote the rule of law and ensure equal access to justice for all. It has three indicators, each covering only part of the problem:

    • Unsentenced detainees (16.3.2)

      People held in prison who have not yet been tried or sentenced, as a share of everyone in prison on a given day. UNODC compiles the data from an annual survey of national criminal justice systems, filling gaps with other sources. A high share can point to slow courts and overuse of pre-trial detention.

    • Reporting of violence (16.3.1)

      The share of victims of physical assault, sexual assault or robbery who reported the incident to the police or other authorities, measured through crime victimisation surveys.

    • Access to dispute resolution (16.3.3)

      The share of people who had a civil or administrative dispute in the past two years and were able to use a formal or informal mechanism to resolve it. It is measured with household legal needs surveys and is the newest of the three indicators.

    • The justice gap

      Broader estimates combine survey and other data to count people with unmet justice needs, including those without legal identity or secure property rights and those in extreme situations such as statelessness. They rest on assumptions and are not repeated every year.

    What already works, and its limits

    Free legal aid in criminal cases

    What works

    International human rights law requires states to provide free legal assistance to people charged with a crime who cannot pay, and some civil cases also require it. A lawyer early in a case can challenge unlawful detention and speed up proceedings.

    Limits

    Many legal aid systems are underfunded and there are too few lawyers, especially outside capital cities; in some countries there is roughly one lawyer per 125,000 people.

    Community paralegals and justice workers

    What works

    Trained non-lawyers help people understand the law, gather documents and negotiate or mediate disputes close to home. Sierra Leone's state-funded Legal Aid Board, for example, supports a network of community justice workers.

    Limits

    Programmes often depend on short-term donor funding; 78% of grassroots justice groups surveyed in 2021 had cut operations or closed for lack of funds. Paralegals cannot represent people in every court.

    Legal advice and representation in civil disputes

    What works

    Independent advice services and legal representation in high-stakes civil cases can resolve problems before they escalate. Community advice officers in South Africa have been estimated to return $6 for every $1 invested, the UK's Citizen Advice service to save £2 in direct costs for every £1 spent, and providing counsel to low-income tenants facing eviction was estimated to save New York City $320 million a year.

    Limits

    Most of these estimates come from middle- and high-income settings, and the savings fall to other parts of government, so justice ministries rarely see the benefit in their own budgets.

    Limiting pre-trial detention

    What works

    Time limits on detention before trial, regular case reviews, bail and non-custodial measures can reduce the number of people held without a sentence. Latin America and the Caribbean lowered the share of unsentenced prisoners from 41% in 2015 to 31% in 2024.

    Limits

    Reforms need working courts, prosecutors and defence lawyers to process cases faster. Elsewhere the share has risen, reaching almost 60% in Central and Southern Asia.

    One-stop justice centres

    What works

    Local centres that bring legal information, mediation and referrals under one roof make help easier to find, and Argentina has built a network of such centres aimed at the communities with the greatest need.

    Limits

    Centres need stable public funding and links to courts and other services to be effective, and their effect on how problems are resolved is less well measured than their number of visitors.

    Innovations to watch

    Promising, but not proven at scale. The stage shows how far each approach has come; it is not a recommendation.

    Early deployment

    Legal needs surveys and SDG indicator 16.3.3

    Household surveys that ask people which legal problems they faced and how they dealt with them shift attention from courts to people's actual needs. The World Justice Project produced the first estimates of indicator 16.3.3 for more than 60 countries in 2023, but most countries do not yet run such surveys regularly.

    Early deployment

    Online information and dispute resolution

    Digital legal information, online filing and online mediation could lower the cost and travel time of resolving small disputes. Evidence on whether they help people with low incomes, low literacy or no internet access, rather than only better-off users, is limited.

    What is holding progress back

    Implementation gap:
    Solutions work but reach too few people. Needs infrastructure, funding and organisation.
    Coordination gap:
    Actors are not aligned. Needs standards, partnerships and better incentives.
    Knowledge gap:
    Cause or mechanism not understood. Needs basic research.

    Questions nobody has answered yet

    Unresolved questions, not vetted breakthroughs. Answering any of them would change what is possible.

    How large is the justice gap really?

    The 5.1 billion estimate combines overlapping groups and has not been updated. How to measure unmet legal needs consistently across countries and over time, and whether the gap is shrinking, are open questions.

    Which services work at national scale?

    Paralegals, advice centres and legal aid show good results in individual programmes. It is less clear how to combine and fund them nationally in low-income countries and what the effects on income, health and security are.

    Why does pre-trial detention fall in some regions and rise in others?

    Latin America and the Caribbean lowered its share of unsentenced prisoners while Central and Southern Asia saw an increase. Which reforms, court capacities and policies explain these different paths is not well documented.

    How should formal and informal justice work together?

    Most people resolve problems through negotiation, family, community leaders or customary bodies rather than courts. How to make these routes fairer, especially for women and minorities, without weakening rights protections remains debated.

    What you can do

    • Give legal skills or time

      If you are a lawyer, law student or paralegal, take on pro bono work or volunteer with a legal advice service or clinic in your area.

    • Support legal aid and advice organisations

      Donate to or volunteer with established organisations that offer free legal advice, community paralegal programmes or support for people in pre-trial detention, and check what evidence they publish about their work.

    • Help someone find advice early

      If a friend, neighbour or colleague faces an eviction, debt claim, workplace dispute or criminal charge, help them find free advice services early, before the problem escalates or deadlines pass.

    Ideas from the community

    Ideas visitors sent in for this challenge, read by the DO GOOD team and pinned with permission. The colour shows the kind of contribution.

    Loading the board…

    Add your idea

    0/120
    0/2000
    Publication

    Your email or phone number is never published.

    What you type is kept in this browser until you send it, so you can come back later.

    What happens next

    The DO GOOD team reads every idea and sorts it by colour: solution, research question, existing project, evidence or local action.

    If you agree to publication, it can be pinned to this board. Contact details are never shown.

    Pinned ideas are not reviewed by scientists and are not endorsed by DO GOOD.

    Connected challenges

    Get involved with DO GOOD

    This page is a research overview. DO GOOD does not run a dedicated programme on this challenge, and donations are not earmarked for it. You can join our volunteer work and outreach.

    Sources

    1. [1]The Sustainable Development Goals Report 2026, Extended Report: Goal 16

      United Nations Department of Economic and Social Affairs (data for 16.3.2 from UNODC), published 2026

      Latest UN storyline for target 16.3. Source of the 11.6 million people in detention and 3.6 million unsentenced in 2024, the stable share of around 30% since 2015, regional trends and prison overcrowding in 65% of countries.

    2. [2]The Sustainable Development Goals Report 2025, Extended Report: Goal 16

      United Nations Department of Economic and Social Affairs (data from UNODC), published 2025

      Previous edition, used for the global unsentenced share in 2015 (29%) and 2023 (31%), the gender breakdown in sub-Saharan Africa and the median reporting rates for sexual and physical assault (indicator 16.3.1).

    3. [3]Justice for All: report of the Task Force on Justice (launch summary)

      Pathfinders for Peaceful, Just and Inclusive Societies / NYU Center on International Cooperation, via ReliefWeb, published 2019

      Source of the 5.1 billion global justice gap estimate and its components, the ODI cost estimates for basic justice, and returns on investment from advice and legal aid programmes. The most recent global estimate of the justice gap found.

    4. [4]WJP Justice Data Graphical Report I: New research examines performance on SDG 16.3.3

      World Justice Project, published 2023

      Legal needs survey estimates for 104 countries. Source of the 1.4 billion people with unmet civil justice needs, the cost of legal problems (1.7% of GDP on average) and the first 16.3.3 estimates for more than 60 countries.

    5. [5]The promise of legal empowerment in advancing access to justice for all (A/78/171)

      United Nations, Special Rapporteur on the independence of judges and lawyers, published 2023

      Report to the UN General Assembly. Source of the share of legal needs met in lower-income countries, the 17% who would use a third party, lawyer-to-population ratios, the right to free legal aid, Sierra Leone's community justice workers and the 2021 funding survey of grassroots justice groups.

    6. [6]SDG indicator metadata 16.3.2: Unsentenced detainees as a proportion of overall prison population

      United Nations Statistics Division / UNODC, published 2024

      Definition, data collection through the UN-CTS survey, country coverage (about 110 countries reporting directly) and limitations of indicator 16.3.2, which the map shows.

    All global challenges