Section · 52 launches
Online Tools & Utilities
Small, sharp web utilities from indie makers: the single-purpose gadgets people bookmark and quietly rely on.
Open sponsor spot. $19 for 7 days puts your company at the top of Online Tools & Utilities, labelled Sponsored. See how it works. It never moves a vote.
Newest first
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Number 1:
Marketing-RechnerFree marketing calculators for ROI, ROAS, customer lifetime value and profitability metrics
DR 2 no change since last check 0 votes. Log in to vote for Marketing-Rechner in print -
Number 2:
BaziCalculator.aiFree Four Pillars chart and analysis with auditable calculation and optional AI-powered readings
DR 18 no change since last check 0 votes. Log in to vote for BaziCalculator.ai in print -
Number 3:
WowSleepCalculatorFree calculators for sleep, mental wellbeing, recovery, fitness, nutrition and healthy living
DR 17 no change since last check 0 votes. Log in to vote for WowSleepCalculator in print -
Number 4:
OnePagePartyFree party calculators, checklists, and printables for any occasion
DR 31 no change since last check 0 votes. Log in to vote for OnePageParty in print -
Number 5: Bike Size Charts
Free bicycle size calculator and chart comparison tool
DR 20 no change since last check 0 votes. Log in to vote for Bike Size Charts in print -
Number 6:
StepKcalCalorie targets that match your real activity
DR 12 no change since last check 0 votes. Log in to vote for StepKcal in print -
Number 7:
CD CalculatorFree Certificate of Deposit calculator showing maturity value, interest and APY in real time
DR 1 no change since last check 0 votes. Log in to vote for CD Calculator in print -
Number 8:
Teaspoon to Grams CalculatorConvert teaspoons to grams accurately by ingredient
DR 1 no change since last check 0 votes. Log in to vote for Teaspoon to Grams Calculator in print -
Number 9:
CalculatorAIAI workspace for trackers, calculators and financial documents
DR 22 +1 (up) since last check 0 votes. Log in to vote for CalculatorAI in print -
Number 10:
GPA CalculateFree online GPA calculator for students, teachers, and parents to track academic performance
DR 50 −1 (down) since last check 0 votes. Log in to vote for GPA Calculate in print -
Number 11:
PitchCalcFree roof pitch calculator for rise, run, degrees, slope, and multiplier
DR 0 no change since last check 0 votes. Log in to vote for PitchCalc in print -
Number 12: Size Convertly
Free size converter for clothing, shoes, rings, bras, accessories, sports gear, and bedding across US, UK, EU and international standards
DR 17 +1 (up) since last check 0 votes. Log in to vote for Size Convertly in print -
Number 13: Vedic Astrology Chart
Free Vedic astrology birth chart calculator with AI-powered interpretation
DR 50 −1 (down) since last check 0 votes. Log in to vote for Vedic Astrology Chart in print -
Number 14:
1001 Pro Calculators and ToolsAll-in-one calculator app with 1,001 calculators offline, no ads, and no data collection
DR 0 no change since last check 0 votes. Log in to vote for 1001 Pro Calculators and Tools in print -
Number 15:
SalaryHowUnderstand your income
DR 26 no change since last check 0 votes. Log in to vote for SalaryHow in print -
Number 16:
MoneyCrunchLabFree financial calculators for mortgages, loans, savings, and retirement
DR 4 −1 (down) since last check 0 votes. Log in to vote for MoneyCrunchLab in print -
Number 17:
Rare PersonasFree personality quizzes with honest results about archetypes
DR 4 +1 (up) since last check 0 votes. Log in to vote for Rare Personas in print -
Number 18:
EcomCalcFree ecommerce calculators for profit margin, CAC, LTV, pricing, Shopify fees, and more
DR 5 no change since last check 0 votes. Log in to vote for EcomCalc in print -
Number 19:
AppCost.AIAI-powered software development cost calculator
DR 27 no change since last check 0 votes. Log in to vote for AppCost.AI in print
Community votes come from members and cannot be bought. DR is Domain Rating by Ahrefs.
The Billboard: paid placement
We'll say it plainly: these spots are paid for, and whoever has paid the most in total goes first. Votes stay out of it.
- 1
PinoyFreelance.PH$5 - 2
Zinn Hub$5 - 3
Zinn Digital®$5 - 4
PBN LTD$5
About Online Tools & Utilities
Some of the best things on the web do a single job and then get out of the way. This shelf is for those: browser-based gadgets, pocket-sized utilities and one-trick apps made by people who spotted an irritation and fixed it over a few late evenings. Think of the tab you keep pinned for months, or the link a friend sends when you moan about a chore.
This page gathers products and businesses from every subcategory below, with filters to narrow things down. Newest arrivals show first; switch to community votes if you want the crowd's pick, and votes can never be bought. Each product has a single main category, included free. Founders add theirs at /submit. A paid launch costs $5, while a free listing waits in a queue of about 1-2 weeks.
Browse Online Tools & Utilities by type
Online Tools & Utilities: questions answered
- What counts as an online tool or utility here?
- Anything that does a narrow, practical job for the visitor, usually in the browser and without a steep learning curve. Calculators, converters, PDF helpers, text cleaners and mailbox rescue services fit. Broad suites with many unrelated features tend to belong in a different category.
- How do I pick the right subcategory for my product?
- Go by what the visitor hands over and what comes back. Figures in, answer out is a calculator. Same content in a new format is a converter. Work aimed squarely at PDFs goes under PDF tools. Overlap can be covered with the extra-categories upgrade, $5.
- How are products ordered on this page?
- Newest listings come first by default. Visitors can re-sort by community votes instead, and votes can never be bought, so a paid launch does not buy a higher spot in that ranking. Filters let you narrow the list by subcategory.
- How do I get my utility listed in this category?
- Open /submit and give it your site's URL. An AI sketches the profile from that site, then you read through each field and rewrite whatever is off. Nothing goes live until you approve it. Choose this category, or one of its subcategories, as your main one.
- What should I compare when choosing between similar tools?
- Look at how plainly the tool explains what it does with your files or data, whether it works without forcing an account, and what limits it sets on size or volume. Check the result on something low-stakes first, and see whether the maker is reachable if it breaks.
Related categories
Building something in Online Tools & Utilities? List your product here.