Kefiw

Archived noindex page. Kefiw's public focus is Property decision help.

Archived page

This older Kefiw page is kept for reference, marked noindex, and removed from the primary sitemap. The current Kefiw experience is focused on property decisions: cost, quotes, damage, buying, selling, owning, and packets.

Go to Property

Ratio Calculator

Simplify, compare, and scale ratios.

Enter two numbers to simplify the ratio, see the decimal equivalent, and scale it up or down to any target.

Part of: Everyday Calculators

Enter the numbers you know below
Fields marked optional can be skipped; results update as you type
:
Simplified
16 : 9
16 : 9 is already in simplest form.
Simplified
16:9
A ÷ B
1.7778
B ÷ A
0.5625
As %
177.7778%
As a decimal: 1.7778. As a percentage: 177.7778%.
Equivalent ratios
×2
  • 32 : 18
×5
  • 80 : 45
×10
  • 160 : 90
Fraction Calculator →Percentage Calculator →

How to use

  1. Enter values for A and B.
  2. The simplified form and decimal ratio update automatically.
  3. Use the scale field to project A onto any new size.

Examples

16 : 9
Already simplified. Decimal 1.7778 — the widescreen aspect ratio.
30 : 45
Simplifies to 2 : 3. Decimal 0.6667.

Before you trust the result

Check the inputs that matter most: dates, rates, units, costs, and any optional fields you skipped. A calculator can only work with the numbers entered here, so use the result as a decision check rather than a final answer when money, health, tax, legal, or safety consequences are involved.

If the result feels surprising, change one input at a time and watch which number moves. That usually shows the real lever behind the decision.

Next up

Need fraction form instead? Switch representations.Fraction Calculator → Ratio solved. Now express it as a percentage.Percentage Calculator →

Frequently asked questions

› Does this handle decimals?

Yes. Non-integer inputs are shown as-is; only integer pairs are simplified with GCD.

› Can I use this for aspect ratios? Trust & accuracy

Yes — the scale field is perfect for projecting a width onto a known height.

Tips & related reading

See the Everyday Calculators hub →

Tips & how-tos

Relevant links

Related tools

Fraction Calculator

Add, subtract, multiply, and divide fractions. Shows simplified result, mixed number, and decimal.

Percentage Calculator

Calculate percentages: what is X% of Y, X is what % of Y, and % change.