Browse by Site

devbolt.dev

DevBolt is a privacy-focused collection of 117 free developer tools that run entirely in the browser — no uploads, no accounts, no telemetry. Categories span formatting, conversion, generation, inspection, and interactive playgrounds.

devutl.com

DevUTL.com hosts a variety of tools for developers and tech enthusiasts. Balanced Ternary Number Converter is one such tool that allows users to convert numbers between decimal and balanced ternary formats, demonstrating its utility in specific technical applications.

devicemetrik.com

Browser-based diagnostic center for testing computer hardware and input devices without software installation.

diagrflow.com

Creates journal-ready PRISMA 2020 systematic review flow diagrams with SVG and PNG export.

dilutionscalculator.com

Accurate online laboratory calculation tools for chemistry students, researchers, and professionals.

dinkytown.net

Dinkytown.net hosts financial calculators like a bi-weekly mortgage payment calculator and a balloon payment calculator to help users manage their money effectively.

disclock.io

Discord time converter and timestamp generator for coordinating events across time zones.

discoverwebtools.com

Discover Web Tools is a resource for converting BBCode to HTML and offers various other web tools for content formatting and manipulation.

displaycheck.cc

Browser-based screen and monitor diagnostic testing tool.

documenttranslator.app

Translate PDF, DOCX, TXT, and Markdown files locally in your browser without uploading or creating an account.

domscan.net

Domain research platform with DNS, WHOIS, security, valuation, and API access.

domainscout.dev

Free developer tool for discovering and checking available domain names for new projects.

drlogy.com

Drlogy.com provides a medical calculator for BUN Creatinine Ratio, helping users assess kidney function.

dutyclarity.com

DutyClarity.com hosts US Tariff Calculator and Tariff Refund Checker tools to help users navigate international trade regulations and reclaim overpaid duties.

dwello.in

Real estate-focused website with property-related resources and practical conversion utilities.

eqd2rechner.de

eqd2rechner.de hosts BED Calculator, an online tool for calculating Body Mass Index (BMI), helping users assess their weight relative to height.

ezgradercalculator.com

EZ Grader Calculator is ezgradercalculator.com's tool for grading assignments and exams online. It helps teachers quickly compute grades and provides customizable options to fit various educational needs.

earthchasers.com

EarthChasers.com hosts a collection of practical tools for outdoor enthusiasts and professionals, including a Bearing Calculator to help navigate using direction and distance measurements.

easecloud.io

EaseCloud provides cloud consulting services and a public set of developer tools. ([easecloud.io](https://easecloud.io/tools/code-generators/env-file-generator/))

easyunitconverter.com

Easy Unit Converter is a straightforward tool site offering various unit conversion utilities. Its Barrel Per Day to Lps Converter helps users easily convert between these two measurement units for barrel flow rates.

easykit.org

EasyKit hosts a growing set of free browser-based utilities for developers and general productivity tasks.

eatcuredmeat.com

eatcuredmeat.com hosts tools for curing meats, such as a Bacon Curing Calculator to help determine optimal curing times and temperatures.

efficienco.com

Free online calculators and tools for construction, engineering, and everyday calculations.

electricaltechnology.org

Electrical Technology.org hosts useful electrical conversion tools, like an AWG to mm² converter and information on #2 gauge wire specifications for DIY electricians and home renovators.

electronicmusicmall.com

Electronic Music Mall provides music production resources and tools. ([electronicmusicmall.com](https://www.electronicmusicmall.com/audio-file-size-calculator/))

electronicsforu.com

Electronics For You is a website that hosts various electronic design and calculation tools, including a Balanced Attenuator Calculator for RF design.

embroiderypricingcalculator.com

Calculate embroidery production costs and retail prices based on stitch count, quantity, labor, and materials.

enchantorder.com

Calculates optimal Minecraft enchantment and anvil combinations to minimize level costs.

engineeringtoolbox.com

Engineering ToolBox is a long-running engineering reference site with formulas, property tables, and practical calculators used across mechanical and civil disciplines.

apps.engineeringtoolbox.com

Engineering ToolBox is a long-running engineering reference site with calculators, data tables, and technical guides. Its app subdomain hosts quick browser-based calculation tools.

envlock.io

Env Lock.io provides a .env file generator tool to help manage environment variables securely and easily across different development environments.

eontools.com

Eon Tools is a site offering various financial calculators, including an Average Variable Cost Calculator, to help users make informed decisions about their expenses and productivity.

equalsmoney.com

Equals Money is a resource for financial calculations, offering a Basis Point Calculator to help with percentage conversions in finance.

everydaycalculator.net

Everyday Calculators.net hosts simple calculators for everyday use, such as a Bedridden Patient Height Calculator to assist with daily living needs.

everydayconverters.com

EverydayConverters.com hosts Base64 to Octal converter and offers a variety of online tools for unit conversion, data encoding, and more.

evite.com

Evite.com hosts tools to organize social gatherings and events. Their Beer Pong Calculator helps plan and manage beer pong tournaments efficiently.

exceltool.io

Free online Excel tools for converting PDFs, viewing and editing workbooks, cleaning data, and repairing spreadsheets.

exchange-rates.org

Exchange-Rates.org publishes live currency rates and conversion tools for major world currencies. ([exchange-rates.org](https://www.exchange-rates.org/converter/aud-nzd?utm_source=openai))

experian.com

experian.com hosts various financial tools to help users manage their credit scores and make informed decisions, including an Auto Lease Calculator.

eyecalculator.com

EyeCalculator is a site that provides tools for parents and caregivers. It includes a Baby Eye Color Calculator to help predict eye color combinations in newborns based on their parents' eye colors.

eyesift.com

Free AI content detector that identifies human-written vs AI-generated text without signup.

ezgif.com

Ezgif is a long-running free online GIF maker and editor with broad coverage of animation tools — GIF creation, optimisation, conversion between video and image formats, and lightweight video editing.

playfatelab.com

Local-first browser tools for random decisions, dice rolls, coin flips, and name picking without needing an account.

firedecisionlab.com

Free retirement portfolio planner comparing tested strategies from 23 investment approaches.

fpvtune.com

AI-assisted tuning tool that analyzes Betaflight blackbox logs for FPV drone optimization.

freeandclear.com

freeandclear.com hosts a suite of practical financial calculators designed to help users manage their money effectively. One featured tool is the Bi-Weekly Mortgage Payment Calculator, which helps homeowners understand how switching to bi-weekly payments can reduce mortgage interest and save money over the long term.

fairviewmicrowave.com

fairviewmicrowave.com hosts educational RF design tools, including a Balanced Attenuator Calculator, to help professionals and students design radio frequency circuits accurately.

favicondl.com

Download favicons and app icons from any website instantly.

feedmyguests.com

FeedMyGuests.com hosts tools to help with planning and organizing events for guests, such as a BBQ Party Calculator to estimate food and supplies needed.

ferty9.com

ferty9.com hosts useful health calculators including a Period Calculator and a Pregnancy Due Date Calculator. These tools assist with tracking menstrual cycles and estimating pregnancy timelines.

fibertools.app

Free crochet and knitting calculators for planning patterns and garments.

figma.com

Figma Colors is figma.com's collection of color palettes and design resources for users to enhance their visual projects.

financialtoolset.com

Free financial calculators and tools for budgeting, investing, debt, taxes, and more

fincent.com

Fincent is a finance-focused website offering various tools to help manage personal and business finances effectively. One of its sample tools is an Average Fixed Cost Calculator, which assists in determining the average cost per unit of production over time.

finder.com

Finder.com hosts Bank Fee Comparison Calculator - Find the Best Account and similar tools to help users compare financial options.

finlytics.org

Finlytics.org hosts financial planning tools, including an Asset Allocation Calculator & Visualizer to help users optimize their investment portfolios.

fnbo.com

fnbo.com provides financial calculators and tools to help with various aspects of personal finance. The Back to School Calculator is an example of the kind of resource available on the site.

fitliferegime.com

Fit Life Regime is a fitness website offering a Bench Press Pyramid Calculator to help users calculate optimal bench press sets and reps for their training regimen.

fitbaseline.com

Fitbaseline.com hosts a Baseline Grid Calculator tool to help designers create visually balanced layouts.

flattools.com

FlatTools.com hosts two useful battery-related tools: a Battery Charge Time Calculator to estimate how long it will take for a device's battery to charge fully, and a Battery Charge Manager to help optimize charging habits for longer-lasting battery life.