Zakat Calculator
Use our free Zakat Calculator for quick, accurate results. Get personalized estimates with clear explanations. Enter your values for instant results.
Calculator
Adjust values & calculateZakat Breakdown
Formula
Sum all zakatable wealth including cash, gold, silver, investments, and business assets. Subtract any debts you owe. If the net amount meets or exceeds the nisab threshold (87.48g of gold or 612.36g of silver in monetary value), pay 2.5% of the net zakatable assets as Zakat.
Last reviewed: December 2025
Worked Examples
Example 1: Salaried Professional's Zakat
Example 2: Small Business Owner's Zakat
Background & Theory
The Zakat Calculator applies the following established principles and formulas. Islamic financial and religious calculations operate within a framework that integrates theological principles with precise mathematical methodology. Zakat, one of the five pillars of Islam, requires payment of 2.5% of qualifying wealth held above the nisab threshold for a complete lunar year. The nisab is pegged to the value of 85 grams of gold or 595 grams of silver, whichever provides the lower threshold, and must be recalculated against current market prices. Qualifying wealth includes cash, savings, business inventory, and investment assets, but excludes primary residence, personal-use items, and tools of trade. Hijri calendar conversion is essential for determining Ramadan dates, Zakat anniversaries, and contract terms expressed in lunar months. The Hijri calendar contains 12 lunar months totalling approximately 354.37 days, making it roughly 11 days shorter than the Gregorian year. Converting between calendars requires accounting for the accumulated drift: since the Hijri epoch of 622 CE (the Prophet's migration from Mecca to Medina), the difference compounds annually. Qibla direction calculation employs spherical trigonometry to determine the great-circle bearing from any point on Earth toward the Kaaba in Mecca (coordinates 21.4225°N, 39.8262°E). The formula accounts for the curvature of the Earth, meaning the bearing from New York to Mecca is approximately northeast rather than the intuitive eastward direction seen on flat maps. Prayer times are determined by solar angles: Fajr begins when the sun is 15-18 degrees below the horizon before dawn; Dhuhr at solar noon; Asr when shadow length equals object height plus its shadow at noon; Maghrib at sunset; and Isha when twilight disappears. These calculations vary by latitude and season, requiring location-specific algorithms. Islamic finance prohibits riba (interest), requiring profit-sharing structures such as Mudarabah (capital provider and entrepreneur share profits at a pre-agreed ratio) and Musharakah (joint venture with proportional profit and loss sharing).
History
The history behind the Zakat Calculator traces back through the following developments. Islamic civilisation made foundational contributions to mathematics and astronomy that underpin many of the calculation methods still used today. Muhammad ibn Musa al-Khwarizmi, working at the House of Wisdom in Baghdad in the 9th century, authored Al-Kitab al-mukhtasar fi hisab al-jabr wal-muqabala, the work from whose title the word algebra derives. His systematic approach to equation solving provided tools directly applicable to financial and calendar calculations. Al-Biruni in the 11th century developed sophisticated methods for calculating geographic coordinates and direction, including early formulations of what became the qibla calculation. The Hijri calendar was formally established by Caliph Umar ibn al-Khattab in 638 CE, fixing the Prophet Muhammad's migration (Hijra) from Mecca to Medina in 622 CE as the epoch. This calendar standardised religious observances across the expanding Muslim world. Islamic inheritance law (Faraid) was codified from Quranic verses and Hadith during the early Islamic period, establishing precise fractional shares for defined classes of heirs. The complexity of multi-heir scenarios drove development of sophisticated fraction arithmetic among early Islamic jurists and mathematicians. The Ottoman Empire administered Zakat as a state function for centuries, integrating it with broader fiscal policy until the empire's dissolution after World War I. The 20th century saw Islamic finance principles largely dormant in formal banking until the resurgence of Islamic banking in Egypt (Mit Ghamr Savings Bank, 1963) and the Gulf states following the 1973 oil boom provided capital for institution-building. The Accounting and Auditing Organization for Islamic Financial Institutions (AAOIFI), established in Bahrain in 1991, and the Islamic Financial Services Board (IFSB), established in Kuala Lumpur in 2002, created the standards infrastructure for modern Islamic finance. The global Islamic finance industry has grown to approximately three trillion US dollars in assets, spanning banking, takaful insurance, sukuk bonds, and Islamic funds across over 80 countries.
Key Features
- Calculate Zakat obligations on cash, savings, gold, silver, and business inventory by comparing total wealth against the nisab threshold and applying the 2.5% annual rate.
- Convert dates bidirectionally between Hijri (Islamic lunar) and Gregorian calendars, handling month boundary variations with both calculated and observed moon sighting options.
- Compute the Qibla direction (bearing) from any GPS coordinate to Mecca using great-circle calculations, with both compass bearing and map visualization.
- Calculate Islamic prayer times (Fajr, Dhuhr, Asr, Maghrib, Isha) for any location and date using sun angle methods from major juristic schools (Hanafi, Shafi'i, MWL, ISNA).
- Compute Mudarabah and Musharakah profit-sharing ratios between capital provider and working partner, with scenarios for different profit splits and loss allocation rules.
- Compare the effective cost of halal financing structures (Murabaha, Ijara, Diminishing Musharakah) against conventional interest-bearing loans for equivalent purchase amounts.
- Distribute an estate under Faraid Islamic inheritance law by entering heirs and their relationships, then calculating each heir's prescribed fractional share of the net estate.
- Estimate the likely start date of Ramadan and Eid al-Fitr by calculating the expected new lunar crescent visibility from a given location and historical sighting criteria.
Frequently Asked Questions
Formula
Zakat = (Total Zakatable Assets − Debts Owed) × 2.5%
Sum all zakatable wealth including cash, gold, silver, investments, and business assets. Subtract any debts you owe. If the net amount meets or exceeds the nisab threshold (87.48g of gold or 612.36g of silver in monetary value), pay 2.5% of the net zakatable assets as Zakat.
Worked Examples
Example 1: Salaried Professional's Zakat
Problem: Ahmad has $15,000 in savings, $5,000 in gold jewelry, $2,000 in silver, $10,000 in stock investments, no business assets, and owes $3,000 in loans. Calculate his Zakat using the gold nisab standard.
Solution: Total assets = $15,000 + $5,000 + $2,000 + $10,000 = $32,000\nNet assets = $32,000 - $3,000 = $29,000\nGold nisab = 87.48g × $85.00 = $7,435.80\n$29,000 > $7,435.80, so Zakat is due\nZakat = $29,000 × 2.5% = $725.00
Result: Zakat due: $725.00
Example 2: Small Business Owner's Zakat
Problem: Fatima has $8,000 in cash, $3,000 in gold, no silver, $5,000 in investments, $12,000 in business inventory, and debts of $20,000. Is Zakat due?
Solution: Total assets = $8,000 + $3,000 + $5,000 + $12,000 = $28,000\nNet assets = $28,000 - $20,000 = $8,000\nGold nisab = $7,435.80\n$8,000 > $7,435.80, so Zakat is due\nZakat = $8,000 × 2.5% = $200.00
Result: Zakat due: $200.00
Frequently Asked Questions
What is Zakat and who must pay it?
Zakat is one of the five pillars of Islam and represents an obligatory form of charity that every adult Muslim must pay annually if their wealth exceeds the nisab threshold for a full lunar year. The word Zakat comes from the Arabic root meaning purification and growth, reflecting the belief that paying Zakat purifies one's remaining wealth and brings spiritual blessings. It is calculated at 2.5% of total eligible wealth after deducting debts. Zakat serves as a mechanism for wealth redistribution, helping the less fortunate in society and fulfilling a fundamental religious duty.
Which assets are subject to Zakat?
Zakatable assets include cash in hand and bank accounts, gold and silver jewelry beyond personal use allowance according to some scholars, stocks and investment portfolios, business inventory and trade goods, rental income, and agricultural produce. Assets not subject to Zakat include your primary residence, personal vehicles, household furniture, tools of trade, and debts owed to you that are unlikely to be repaid. Business assets used for production rather than trade are also generally exempt. The classification can vary among Islamic schools of thought, so consulting a qualified scholar is advisable.
Can I deduct debts from my Zakat calculation?
Yes, debts that you owe to others can be deducted from your total zakatable assets before calculating Zakat. This includes outstanding loans, credit card balances, mortgage payments due, and other financial obligations. However, scholars differ on whether long-term debts like mortgages should be deducted in full or only the upcoming year's installments. The Hanafi school generally allows deducting all debts from zakatable wealth, while other schools may have different rulings. It is recommended to deduct only short-term debts and the current year's portion of long-term debts for a balanced approach.
When should Zakat be paid and to whom?
Zakat should be paid once a lunar year (hawl) has passed since your wealth first reached the nisab threshold. Many Muslims choose to pay during Ramadan for increased spiritual reward, though it can be paid at any time. The Quran specifies eight categories of eligible recipients in Surah At-Tawbah (9:60): the poor (fuqara), the needy (masakin), Zakat administrators, those whose hearts are to be reconciled, freeing captives, debtors, in the cause of Allah, and stranded travelers. Zakat should ideally be distributed locally first, and it cannot be given to one's own dependents or direct ancestors and descendants.
Does Zakat Calculator work offline?
Once the page is loaded, the calculation logic runs entirely in your browser. If you have already opened the page, most calculators will continue to work even if your internet connection is lost, since no server requests are needed for computation.
Why might my result differ from another tool or reference?
Differences typically arise from rounding conventions, the specific version of a formula (for example, simple vs compound interest), or unit inconsistencies between inputs. Check that both tools are using the same formula variant and the same units. The References section links to the authoritative source behind the formula used here.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy