Calculator Directory
Browse practical calculators by topic
Start with calculator groups people use for date cutoffs, money planning, body metrics, health context, nutrition targets, and everyday math. Each group keeps the most relevant pages and guides close together.
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Date and time helpers
Date & Time
Calendar-aware calculators for exact age, deadline checks, date gaps, clock durations, and timezone planning.
Date & Time
Age Calculator
Calculate exact age in years, months, and days from date of birth.
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Date & Time
Date Difference Calculator
Find the duration between two dates (years, months, days and total days).
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Date & Time
Day of Week Calculator
Find which weekday a date falls on (Monday, Tuesday, etc.).
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Date & Time
Time Duration Calculator
Calculate the time difference between two clock times (hours and minutes).
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Date & Time
Timezone Difference Converter
Convert date and time between time zones with DST-aware offsets.
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Date & Time
Days to Minutes Converter
Convert days to minutes and minutes to days instantly with auto reverse.
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Finance planning tools
Finance
Planning calculators for city costs, loan payments, tax, tips, currency checks, and everyday budget comparisons.
Finance
Tip Calculator
Calculate tip amount, total bill, and per-person split.
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Finance
Loan EMI Calculator
Estimate monthly loan payment (EMI) for a fixed-rate loan.
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Finance
Cost of Living Calculator
Compare city living costs and estimate equivalent salary with category-wise monthly budget.
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Finance
Currency Converter
Convert USD to PKR and other major currencies with live exchange rates.
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Finance
Tax Calculator
Calculate tax amount, subtotal, and total for tax-inclusive or tax-exclusive pricing.
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Body and fitness estimators
Body & Fitness
Body-metric and fitness calculators that pair quick estimates with practical limits and related context.
Body & Fitness
BMI Calculator
Calculate BMI (Body Mass Index) and view the category range.
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Body & Fitness
Body Fat Percentage Calculator
Estimate body fat percentage using measurement-based formulas (US Navy method).
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Body & Fitness
BMR Calculator
Calculate Basal Metabolic Rate (BMR) using the Mifflin-St Jeor formula.
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Body & Fitness
TDEE Calculator
Estimate daily calorie needs (TDEE) based on BMR and activity level.
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Body & Fitness
Waist-to-Hip Ratio (WHR) Calculator
Calculate waist-to-hip ratio to assess fat distribution.
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Body & Fitness
Ideal Body Weight Calculator
Estimate ideal body weight using common clinical formulas (Devine and others).
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Body & Fitness
Lean Body Mass Calculator
Estimate lean body mass (LBM) using height, weight, and sex-based formulas.
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Body & Fitness
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) using the Mosteller formula.
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Body & Fitness
Waist-to-Height Ratio Calculator
Calculate waist-to-height ratio (WHtR) as a simple cardiometabolic screening metric.
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Body & Fitness
Pace / VO2 Max Calculator
Calculate running pace and estimate VO2 max using common field-test formulas.
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Health estimate tools
Heart & Health
Educational health calculators with visible assumptions, caution notes, and connected risk-context tools.
Heart & Health
Maximum Heart Rate Calculator
Estimate maximum heart rate using common formulas (220-age, Tanaka).
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Heart & Health
Heart Rate Zone Calculator
Calculate training heart rate zones based on your max heart rate.
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Heart & Health
Cardiovascular Risk Calculator
Estimate 10-year ASCVD cardiovascular risk using pooled cohort equations (screening estimate).
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Heart & Health
Stroke Risk Calculator
Check common stroke risk factors (age, BP, diabetes, smoking) and get an educational risk summary.
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Heart & Health
Diabetes Risk Calculator
Combine blood sugar range, BMI, and family history into a simple diabetes risk awareness summary.
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Heart & Health
Life Expectancy Calculator
Estimate a broad life expectancy range using age and lifestyle factors (educational only).
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Heart & Health
Blood Pressure Risk Calculator
Classify blood pressure (normal, elevated, stage 1/2) and understand what the range means.
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Heart & Health
Cholesterol Risk Calculator
Interpret LDL, HDL, triglycerides and key ratios (non-HDL, TC/HDL) with guideline ranges.
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Heart & Health
Cancer Risk Assessment Tool
Identify common cancer risk factors (smoking, family history, BMI) for awareness and next steps.
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Nutrition planning tools
Nutrition & Diet
Nutrition planning calculators for macros, hydration, glycemic load, and daily targets that can be adjusted over time.
Nutrition & Diet
Macronutrient (Macros) Calculator
Convert calories into grams of protein, carbs, and fat based on your macro split.
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Nutrition & Diet
Hydration Calculator
Estimate daily water intake based on weight and activity level.
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Nutrition & Diet
Glycemic Load (GI/GL) Calculator
Calculate glycemic load (GL) from glycemic index (GI) and net carbs per serving.
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Math calculators and converters
Math
Everyday math and unit calculators for percentage, measurement, and formula checks with worked examples.
Math
Percentage Calculator
Calculate X as a percentage of Y and compute P% of a value.
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Math
EV Range Converter
Convert EV range across WLTP, EPA, NEDC, and CLTC standards instantly.
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Math
Cm to Inches Converter
Convert centimeters to inches and inches to centimeters with auto reverse.
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Math
Pounds to Kg Converter
Convert pounds to kilograms and kilograms to pounds with auto reverse.
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