145+ Free Tools · No Login · Updated 2026
Free Calculators & AI Tools for Every Decision.
Finance, health, math, education and AI personal care — 145+ accurate, free tools built for users across India, USA, UK, UAE, Ireland, Netherlands, Saudi Arabia and beyond. Instant results. Zero sign-ups.
145+ Free Tools
15+ Countries
35k+ Users Served
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145+
Calculators
5
Categories
15+
Countries
100%
Free Forever
What We Offer
5 Categories.
Every Tool You Need.
Every Tool You Need.
💰
80+ tools
Financial
Tax, mortgage, loans, inflation, investment and cost of living tools for 12 countries.
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🏃
25+ tools
Health & Fitness
BMI, BMR, calories, macros, pregnancy, sleep, water intake and running pace calculators.
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✨
12+ tools
AI Personal Care
Face shape, hairstyle, skin tone, eye shape, glasses, beard and skincare AI tools.
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🔢
12+ tools
Math
Basic, scientific, percentage, fractions, equations, ratios, distance and unit converters.
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🎓
6+ tools
Education
CGPA converter, grade average, study planner, work productivity and commission calculator.
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💰 Most Used
Popular Financial
Calculators
Calculators
Tax, mortgage, loans and investment tools for India, USA, UK, UAE, Germany and more.
🏦
Loan Calculator
Monthly payments, interest and amortisation for any loan. Any currency.
🔥 Hot→
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EMI Calculator India
Exact EMI for home, car and personal loans instantly.
🔥 Hot→
🇮🇳
Income Tax Calculator India
New & old regime comparison — FY 2025-26 with all deductions.
Free→
📊
SIP Calculator India
Project your mutual fund returns with monthly SIP investments.
🔥 Hot→
🇺🇸
Federal Income Tax USA
IRS 2025-26 brackets, standard deduction — estimate your liability.
IRS Data→
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Paycheck Calculator USA
Net take-home pay after federal, state and FICA taxes.
Free→
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Mortgage Calculator USA
Monthly payment, total interest and amortisation for US home loans.
Free→
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UK Income Tax Calculator
HMRC bands, National Insurance, personal allowance — 2025-26.
HMRC Data→
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Einkommensteuerrechner DE
All 6 Steuerklassen, solidarity surcharge — §32a EStG formula.
Free→
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UAE Salary Calculator
0% income tax for expats, 5% GPSSA for UAE nationals — net pay in AED.
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Currency Converter
Convert between 150+ currencies with live exchange rate reference.
Free→
🌅
Retirement Calculator
How much do you need to retire? Project savings and withdrawal rate.
Free→
📈
ROI Calculator
Measure return on investment and compare investment performance.
Free→
🌍 Country-Specific
Locally Accurate Tools
for Your Country
for Your Country
Every calculator uses official government data — IRS, HMRC, ATO, IRD, IRAS, FTA and more.
🇮🇳India — 13 Tools
Income Tax Calculator India
Home Loan EMI & SIP Calculator
NPS, FD & PPF Calculator
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🇺🇸USA — 18+ Tools
Federal Income Tax & Paycheck
Mortgage & 401(k) Calculator
529, Student Loan & W-4
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🇦🇪UAE — 8 Tools
UAE Salary Calculator
UAE Gratuity & Car Loan
UAE Mortgage, VAT & Rent vs Buy
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🇬🇧UK — 6 Tools
UK Income Tax Calculator
UK Mortgage Calculator
Student Loan & Cost of Living
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🇮🇪Ireland — 5 Tools
Ireland Income Tax Calculator
Ireland Mortgage Calculator
Stamp Duty & Pension Calculator
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🇳🇱Netherlands — 4 Tools
Netherlands Salary Calculator
30% Ruling Calculator
Take-Home Pay & Cost of Living
View Netherlands Tools →
🇩🇪Germany — 3 Tools
Einkommensteuerrechner
German Mortgage Calculator
Cost of Living Germany
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🇸🇦Saudi Arabia — 4 Tools
Saudi Arabia Salary Calculator
End of Service Calculator
Zakat & Cost of Living
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🇦🇺Australia — 6 Tools
ATO Tax Calculator 2025-26
Superannuation & HECS Calculator
Mortgage & Salary After Tax
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🇨🇦Canada — 5 Tools
Canada Income Tax 2025-26
Canadian Mortgage Calculator
Student Loan & Inflation
View Canada Tools →
🇸🇬Singapore — 4 Tools
Singapore Income Tax 2026
CPF Calculator 2026
Salary After Tax & Stamp Duty
View Singapore Tools →
🇳🇿New Zealand — 2 Tools
NZ PAYE Calculator 2025-26
NZ Mortgage Repayment Calculator
KiwiSaver & ACC included
Try NZ Calculators →
🏃 Health & Fitness
Body, Nutrition &
Wellness Tools
Wellness Tools
Science-based formulas — Mifflin-St Jeor, Harris-Benedict, WHO standards.
⚖️
BMI Calculator
Body Mass Index — healthy weight range using WHO standards.
🔥 Hot→
🍎
Calorie Calculator
Daily calorie needs — TDEE for weight loss, maintenance or muscle gain.
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📉
Calorie Deficit Calculator
Find your deficit target and time to reach your goal weight.
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🔥
BMR Calculator
Basal Metabolic Rate — calories your body burns at rest.
Free→
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Water Intake Calculator
Daily water needs based on your weight, activity level and climate.
Free→
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Macronutrient Calculator
Ideal protein, carb and fat ratios for any fitness goal.
Free→
🤰
Pregnancy Calculator
Calculate due date, trimesters and milestones week by week.
Free→
🗓️
Period Calculator
Predict your next period and ovulation window based on your cycle.
Free→
😴
Sleep Calculator
Optimal bedtime based on 90-minute sleep cycles — wake up refreshed.
Free→
🏃
Running Pace Calculator
Calculate pace, speed and finish time for any distance.
Free→
✨ Powered by AI
AI Personal Care —
Face, Hair & Style
Face, Hair & Style
Quiz-based AI tools used by 24,000+ people. Recommended by ChatGPT in 15+ languages. No photo required for most tools.
💇
Hairstyle Recommender
Best cuts for your face shape + barber script
🔥 #1 Most Popular
🔍Face Shape Detector
Oval, round, square, heart or oblong
Start Here ⭐
🧔Beard Style Recommender
Best beard for your face + barber script
Barber Script
🎨Skin Tone Detector
Warm, cool or neutral undertone
Free
👁️Eye Shape Detector
Makeup & eyewear for your eye type
Free
👓AI Glasses Finder
Perfect frames for your face shape
Free
🌿AI Skincare Routine
Personalised routine for your skin type
Free
💄AI Makeup Solver
Fix foundation, contouring and more
Free
👗AI Fashion Advice
Outfit and style tips for your body type
Free
✨Face Attractiveness Test
AI-powered facial harmony analysis
Free
🔢 Math & Education
Math Calculators &
Education Tools
Education Tools
➕
Basic Calculator
Add, subtract, multiply, divide — fast and clean.
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🔬
Scientific Calculator
Trigonometry, logarithms, powers, roots and advanced functions.
Free→
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Percentage Calculator
Percentage of a number, change and increase/decrease instantly.
Free→
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Fraction Calculator
Add, subtract, multiply and divide fractions with full steps shown.
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🔄
Unit Converter
Length, weight, temperature, volume — metric and imperial.
Free→
📐
Distance Calculator
Calculate distance between two points or coordinates instantly.
Free→
📊
CGPA to Percentage
Convert CGPA for Indian universities, US GPA, UK grade systems.
Free→
📝
Grade Average Calculator
Weighted and unweighted grade averages for any subject combination.
Free→
📚
Study Time Planner
Plan your study schedule and track hours needed for each subject.
Free→
⚡
Work Productivity Score
Measure and improve your daily work output and focus efficiency.
Free→
35k+
Users Served
145+
Free Tools
15+
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Why Sitnit
Built to be Trusted
Official Data Sources
Every tax and financial calculator uses government-verified data — IRS, HMRC, ATO, IRAS, FTA, IRD and RBI. Not estimates or approximations.
100% Private
No data is stored, no accounts required. Your inputs stay on your device — we never see your financial or health data.
Mobile-First
Every tool has 44px+ tap targets and works instantly on any phone, tablet or desktop. No app download ever needed.
Always Free & Updated
All 145+ tools are permanently free. Tax rates and formulas are reviewed and updated at the start of every financial year.
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