Small apps.
Big clarity.

A growing collection of free mini web apps that help you see things differently — in your relationship, your budget, your daily life.

New tools regularlyNo signup requiredWorks on mobileMade in Montréal100% free

Featured tool

50+ tools
🔴

Visual Timer

Watch time melt away.

A colored disk that shrinks as time passes. No scrolling numbers — just a shape fading away. Perfect for staying focused, helping a child manage a task, or picturing a break.

ProductivityNo sign-up100% free
Try it →

Free tools

Beautifully designed utility tools

No sign-up. No hidden tracking. Just tools that work.

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Sleep CalculatorFind optimal bedtime
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Due Date CalculatorEstimate your due date
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BMI CalculatorBody Mass Index with WHO categories
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Running Pace CalculatorPace, finish time, or distance
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BMR CalculatorBasal metabolic rate via Mifflin-St Jeor
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TDEE CalculatorTotal daily energy expenditure by activity level
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Calorie CalculatorDaily calorie needs for weight goals
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Macro CalculatorProtein, fat, carb targets by goal
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Calorie Deficit CalculatorDeficit needed to reach target weight
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Body Fat CalculatorNavy 3-site method for body fat %
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Ideal Weight CalculatorDevine, Robinson, Miller formulas
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Lean Body Mass CalculatorFat-free mass from weight and body fat %
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Water Intake CalculatorDaily hydration target by weight and activity
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Protein Intake CalculatorDaily protein target by goal and body weight
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Password GeneratorStrong, secure passwords
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Color PickerHEX, RGB, HSL converter
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Number Base ConverterDecimal, binary, hex, octal
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QR Code GeneratorCreate QR codes instantly
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JSON FormatterFormat, validate, and minify JSON
#️⃣
Hash GeneratorSHA-1, SHA-256, SHA-512 hashes
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Password Strength CheckerScore, crack time, and criteria checklist
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Text DiffCompare two texts, highlight changes
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Color Palette GeneratorGenerate palettes from any base color
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File Size ConverterKB, MB, GB, TB and KiB, MiB, GiB, TiB
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Regex TesterLive match highlighting, replace mode, group capture
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Base64 EncoderEncode/decode Base64 with URL-safe mode and UTF-8 support
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URL EncoderPercent-encode/decode with encodeURIComponent vs encodeURI
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UUID GeneratorGenerate UUID v4 (random) and v7 (time-ordered) in bulk
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JWT DecoderDecode JWT header, payload, claims, and verify HS256
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Case ConvertercamelCase, snake_case, kebab-case, PascalCase, and 10 more
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Cron BuilderBuild or parse UNIX cron with next-5-runs preview
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CSS PlaygroundLive generator for gradients, shadows, filters, transforms + 7 presets
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Unix Timestamp ConverterEpoch ↔ human-readable date, ms or seconds
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Color Contrast CheckerWCAG 2.1 AA/AAA contrast ratio checker
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Slug GeneratorURL-friendly slug from any text
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Markdown Table GeneratorVisual table builder with GFM output
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ppm ↔ mg/m³ ConverterConvert atmospheric contaminant concentrations
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TWA Calculator8-hour time-weighted average exposure
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IH Units ConverterPressure, flow, velocity, aerosol units
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Noise Level AdditionLogarithmic sum of multiple sound sources
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Noise Distance AttenuationSound level vs distance, point or line source
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Flow Rate CalculatorQ = V × A for round and rectangular ducts
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Air Changes per HourACH for rooms, labs, and offices
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STEL / Excursion CheckerVerify short-term exposure peaks vs limits
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WBGT CalculatorWet-bulb globe temperature for heat stress
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Hearing Protector EffectivenessEffective NRR via CCOHS / CSA Z94.2 derating
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Velocity Pressure ↔ Air VelocityVP and air velocity with density correction
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Noise Dose & TWACumulative noise dose, NIOSH / OSHA / Quebec
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Inverse Square LawIntensity vs distance for point sources (radiation)
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Sync — apps for couples and familiesSoon
Our next family of mini-apps. See what's coming →

Why Bam's Thinkery?

Most online tool sites were built 15 years ago and never evolved: invasive ads, dated design, data sent to unknown servers. We deserve better. Bam's Thinkery is an independent project born in Montréal with a simple idea: free utility tools that respect your time, your privacy, and your intelligence.

Every tool runs entirely in your browser — no data leaves your device. No account to create, no password to remember, no hidden tracking. You open the page, use the tool, and that's it. We believe everyday utilities deserve the same design care as premium applications.

From productivity to finance, health to developer tools — our collection of 50+ free tools covers everyday needs. Each tool is bilingual (English and French), mobile-friendly, and designed to be useful from the first second. Because a good tool is one that doesn't need explaining.

Frequently Asked Questions

Are all tools free to use?
Yes. All 100+ tools are completely free — no account, no paywall, no ads blocking your work.
Do you store my data?
No. Every tool runs entirely in your browser. Nothing is sent to servers — your inputs stay on your device.
What kinds of tools are available?
Health calculators, productivity timers, developer utilities, finance tools, writing aids, cuisine converters, and design helpers — over 100 tools across 10 categories.
Are tools available in French?
Yes. Every tool is fully bilingual. Switch between English and French at any time — French pages use the /fr/ URL prefix.
Can I embed a tool on my website?
Yes. Every tool has an embed button that generates an iframe code you can drop into any website. The embedded version is lightweight and ad-free.
Can I use the tools offline?
Most tools work without an internet connection once the page has loaded, since all logic runs in the browser.

Got an idea for a cool app?

We’re always cooking. Drop us a line.