Free calculators

Flesch reading ease calculator

Get your text's Flesch reading ease score from 0 to 100, what it means, and the sentences pulling it down.

Engagement rate calculator

Any account's engagement rate by followers and by views, from a username or a link, against benchmarks for its size.

Social mediaInstagramTikTok

Aspect ratio calculator

Simplify any size to its ratio, solve the missing side and see the frame drawn to scale.

YouTube money calculator

What a YouTube channel or video earns from ads, from its real views and your RPM, with Shorts apart.

VideoYouTube

Podcast sponsorship calculator

What your podcast ads are worth per episode and per month, from published rates, with a rate card.

Value equation calculator

Score your offer on the 4 parts of Hormozi's value equation and find the change that raises it most.

Book royalty calculator

What you earn per copy at KDP, Apple Books, Kobo, B&N, Google Play and Audible.

BooksAmazon KDPApple Books

Schengen calculator

Count your days under the 90/180-day rule, and see how long you can stay.

Card fees abroad calculator

See what a payment or withdrawal abroad costs on each card.

Chronological age calculator

Chronological age for a test or an assessment, with the borrowing laid out step by step.

Protein calculator

Your protein a day from the US guidelines, Peter Attia and Gabrielle Lyon, side by side, with grams per meal.

Flesch-Kincaid calculator

Get your text's Flesch-Kincaid grade level, the US school grade needed to read it, and what to simplify.

Hex to RGB converter

Convert a hex color to RGB, HSL and CMYK, and check it against white and black text.

YouTube Shorts money calculator

What YouTube Shorts earn from their real views and your Shorts RPM, with the Shorts pool explained.

VideoYouTube

Flesch reading ease calculator

Get your text's Flesch reading ease score from 0 to 100, what it means, and the sentences pulling it down.

Engagement rate calculator

Any account's engagement rate by followers and by views, from a username or a link, against benchmarks for its size.

Social mediaInstagramTikTok

Aspect ratio calculator

Simplify any size to its ratio, solve the missing side and see the frame drawn to scale.

YouTube money calculator

What a YouTube channel or video earns from ads, from its real views and your RPM, with Shorts apart.

VideoYouTube

Podcast sponsorship calculator

What your podcast ads are worth per episode and per month, from published rates, with a rate card.

Value equation calculator

Score your offer on the 4 parts of Hormozi's value equation and find the change that raises it most.

Book royalty calculator

What you earn per copy at KDP, Apple Books, Kobo, B&N, Google Play and Audible.

BooksAmazon KDPApple Books

Schengen calculator

Count your days under the 90/180-day rule, and see how long you can stay.

Card fees abroad calculator

See what a payment or withdrawal abroad costs on each card.

Chronological age calculator

Chronological age for a test or an assessment, with the borrowing laid out step by step.

Protein calculator

Your protein a day from the US guidelines, Peter Attia and Gabrielle Lyon, side by side, with grams per meal.

Flesch-Kincaid calculator

Get your text's Flesch-Kincaid grade level, the US school grade needed to read it, and what to simplify.

Hex to RGB converter

Convert a hex color to RGB, HSL and CMYK, and check it against white and black text.

YouTube Shorts money calculator

What YouTube Shorts earn from their real views and your Shorts RPM, with the Shorts pool explained.

VideoYouTube