Proportion Calculator

Proportion Calculator helps you solve any missing value in a proportion, scale recipes for more or fewer servings, and split a total into ratio parts. You get clear step-by-step working, not just a final number. Works fully offline. No ads. No account required.

SOLVE: Find A, B, C, or D
• Direct proportion (A/B = C/D) and inverse/product forms
• Simple 3-step wizard. Enter one number at a time
• Full answer with ratio bars, kitchen fractions, and equivalent ratios
• Cross-multiply check so you can trust the result
• Quick examples for recipes, screens, maps, and more

SCALE: Recipe and batch scaling
• Set original and target servings (slider 1 to 24)
• See the multiplier instantly (for example x 2.25)
• Add ingredients. Every amount updates automatically
• Kitchen-friendly measures in grams and fractions

MIX: Split totals by ratio
• Enter any total and unit (ml, g, cups, or custom)
• Custom ratio parts with donut chart and percentages
• Add or remove parts easily
• Share or save your mix

STUDIO TOOLS (More tab)
• Ratio studio: simplify ratios, check equality, golden ratio
• Aspect and map scale for screens, photos, and blueprints
• History: every calculation saved on your device
• Tap any history entry to open and edit it again

SETTINGS AND PERSONALIZATION
• Soft light, Night, or Match system theme
• 12 accent colors
• 10 languages: English, Hindi, Urdu, Spanish, Arabic, Portuguese, French, German, Chinese, Bengali
• Decimal precision from 0 to 8 places
• Haptic feedback
• Export history, share app, rate on Play Store

WHY PROPORTION CALCULATOR?
Whether you are adjusting a recipe, checking a mix ratio, resizing a screen, or doing homework, you get the answer and the working.

• 100% offline calculator. No internet needed for math
• No ads, no subscriptions, no sign-up
• History stays on your device
• Clean, modern interface built for daily use

Download Proportion Calculator and solve proportions the clear way.