Free calculator tools
211 interactive calculators hosted by Calclet—browse by topic below. Need something similar on your own site with your branding and lead capture? Create yours.
Browse by topic
- Email marketing calculators7 tools
- Mortgage & housing calculators11 tools
- Real estate investment calculators11 tools
- SaaS & subscription calculators38 tools
- Ecommerce calculators17 tools
- Legal & settlement calculators3 tools
- Health & wellness calculators5 tools
- Construction & trades calculators15 tools
- Creator & media calculators9 tools
- Sales & pipeline calculators9 tools
- Workforce & HR calculators11 tools
- Logistics & operations calculators7 tools
- Hospitality & events calculators5 tools
- Home services calculators3 tools
- Personal finance calculators8 tools
- Marketing & growth calculators25 tools
- Finance & profitability calculators8 tools
- Agency & professional services calculators6 tools
- Business calculators13 tools
Email marketing calculators
View all →- Attributed revenue from email sendsSends × open × CTR × purchase CVR × AOV
- Attributed revenue from one sendClassic opens × clicks × purchases × AOV
- Click-to-open rateUnique clicks / unique opens x 100
- Projected end-of-month list sizeCurrent list + new subs - unsubscribes
- Projected list sizeStarting subs × (1 + monthly growth)^months
- Revenue from delivered inbox volumeSends x inbox% x open% x conversion% x value
- Suggested sponsorship price(Subscribers x open% / 1000) x CPM
Mortgage & housing calculators
View all →- Approximate HELOC capacityMax LTV ceiling − existing mortgage
- Back-end DTI (all debts)Monthly obligations ÷ gross monthly income
- DSCRAnnual NOI ÷ annual debt service
- Estimated payment savings(Old payment - new payment) x remaining months
- Housing payment to incomeMonthly housing payment ÷ gross monthly income × 100
- LTV and equity snapshotUses appraised/market value today
- Max monthly housing payment (PI)Income × DTI cap − non-housing debts
- Months to recover closing costsClosing costs ÷ monthly savings
Real estate investment calculators
View all →- Cash-on-cash returnAnnual cash flow ÷ cash invested × 100
- Estimated seller net at closingPrice − commission − fees − optional loan payoff
- Flip net profit (simple)ARV − purchase − rehab − selling costs
- Going-in cap rate (NOI basis)NOI ÷ acquisition price
- Going-in cap rate (stabilized)NOI ÷ price using an expense load slider
- Gross rental yield calculatorBefore expenses—quick deal screening
- Monthly gross booking revenueADR × booked nights + optional cleaning
- Monthly management fee revenueUnits x average rent x fee%
SaaS & subscription calculators
View all →- Annual plan price and upliftMonthly x 12 x (1 - discount)
- Annual prepay savingsVersus twelve monthly invoices at list price
- Blended CACSales & marketing spend ÷ new customers
- Break-even seat count(Plan A fixed − Plan B fixed) ÷ (Plan B/seat − Plan A/seat)
- Burn multiple (monthly snapshot)Net burn ÷ max(net new ARR, $1)
- Customer lifetime value (LTV)Total revenue expected from one customer
- Ending MRRBeginning + new + expansion − churn
- Expansion rate on starting ARRExpansion $ ÷ beginning ARR × 100
Ecommerce calculators
View all →- Average order valueRevenue ÷ orders
- Blended AOV after bundlesBase AOV + (uptake% x bundle increment)
- Break-even ROAS1 / contribution margin
- Contribution after paid adsRevenue − COGS − ad spend
- Contribution marginRevenue - COGS - shipping - ad spend
- Cost per saleMarketing spend ÷ attributed orders
- Discount vs list price(List − sale) ÷ list
- Ecommerce unit economicsOrder profit and margin % after landed costs
Legal & settlement calculators
View all →Health & wellness calculators
View all →- Body mass index (BMI)Imperial: lbs & total inches
- Estimated patient lifetime valueVisit value x visits/year x retention years
- Provider utilizationBooked slots / available slots x 100
- Show rateAppointments completed ÷ booked × 100
- Target intake (rough maintenance − deficit)Illustrative — not medical advice
Construction & trades calculators
View all →- Agency project quote estimatorHours × blended rate with rush adjustment
- Approximate roofing squares(Footprint × pitch × waste) ÷ 100
- Build effort estimate (ballpark)Screens × complexity × rate × platform factor
- Cubic yards (rectangular pour)Feet × feet × (inches ÷ 12) ÷ 27
- Effective hourly rateTotal gross pay ÷ total hours worked
- Estimated gallons neededWall area × coats ÷ labeled coverage
- Estimated project timelineTotal scoped hours / effective team weekly hours
- Event F&B budget estimatorPer-guest catering + bar + flat venue minimum
Creator & media calculators
View all →- Avg. downloads per episodeTotal downloads ÷ episodes published
- Campaign ROI (profit basis)(Sales x margin - spend) / spend x 100
- Estimated campaign fee(Followers ÷ 1k) × base CPM × engagement × tier
- Estimated gross ad revenueIllustrative — actual Studio analytics vary
- Launch revenue forecastLeads x attendance% x conversion% x offer price
- Monthly affiliate commission (model)Clicks × purchase rate × AOV × commission %
- Net revenue after refundsSales x price x (1 - refund%)
- Podcast ad revenue (rough)Downloads × CPM × spots × episode cadence
Sales & pipeline calculators
View all →- Commission split by roleDeal value x commission % x split
- Demo no-show rate(Booked - attended) / booked x 100
- Expected bookings from pipelineOpportunities × avg ACV × win %
- Expected new bookings ($)Meetings × held % × win % × ACV
- Expected proposal revenueProposals x win rate x contract value
- Monthly meeting forecastSDRs x activities/day x working days x conversion%
- Pipeline coverage ratioPipeline value / quota
- Reply rateReplies ÷ messages sent × 100
Workforce & HR calculators
View all →- Annual employer match (model)Match % × eligible deferral capped by plan rules
- Blended effective hourly rate(Σ hours × rate) ÷ total hours
- Estimated calls handled/dayAgents x occupancy x available minutes / handle time
- Expected hiresApplicants x interview% x offer% x acceptance%
- Extended team engagement totalContractors × months × monthly bill × mgmt fee
- Fully loaded employee costSalary plus optional benefits & payroll tax load
- Profit per FTENet profit ÷ employees
- Raise % & dollar change(New − old) ÷ old × 100
Logistics & operations calculators
View all →- Billable weight (lb)Max(actual lb, cubic in ÷ DIM factor)
- Cash conversion cycle (days)DIO + DSO - DPO
- Days on handAvg inventory ÷ daily COGS
- Estimated monthly fuel spendMiles ÷ MPG × price per gallon
- Reorder point (units)(Daily demand × lead time) + safety stock
- Route operating profitRevenue - fuel - labor - vehicle costs
- Warehouse utilizationUsed area / total area x 100
Hospitality & events calculators
View all →- Food cost % of menu pricePlate cost ÷ menu price × 100
- Indicative wedding collection totalPackage base + hourly coverage + optional second
- Minimum menu price (cost-plus)Selling price so food cost hits your target %
- Monthly unit operating profitRevenue - COGS - labor - fixed costs
- Revenue per available room (RevPAR)ADR × occupancy %
Home services calculators
View all →Personal finance calculators
View all →- Auto loan payment estimatorPrincipal & interest (simple, no fees)
- Future nominal amountPresent sum × compound inflation
- Investment growth (monthly contributions)Nominal future value — not inflation-adjusted
- Months to pay off (fixed payment)Requires payment greater than monthly interest
- Present value of a future sumPV = FV ÷ (1 + r)^n
- Price after stacked % discountsList × (1 − 1st) × (1 − 2nd)
- Rewards earned (simple model)Not legal/tax advice — illustrative only
- Years to double (compound growth)Exact continuous-compounding style estimate via ln
Marketing & growth calculators
View all →- 3-second hook rate3-second views / impressions x 100
- ABM ROI estimateEngaged accounts x meeting% x close% x ACV vs spend
- Ad spend pacing vs targetActual spend minus ideal spend by today
- Additional leads from conversion liftTraffic x current CVR x lift%
- Affiliate payout estimateAttributed revenue x commission rate
- Blended ROASTotal attributed revenue / total spend
- Click-through rateClicks ÷ impressions × 100
- Cost per leadSpend efficiency through the funnel
Finance & profitability calculators
View all →- Break-even calculatorMonthly units needed to cover fixed costs
- Consulting gross margin(Billings - loaded cost) / billings x 100
- Gross margin on project(Fee − delivery cost) ÷ fee × 100
- Indicative production quoteFlat tiers + per-minute editorial + rush
- Indicative translation feeWords × blended rate × rush factor
- Operating runwayCash ÷ monthly burn (net)
- Procurement savings rate(Baseline - negotiated) / baseline x 100
- Profit margin calculatorNet profit as % of revenue
Agency & professional services calculators
View all →- Contribution margin per hour(Bill rate − loaded cost) ÷ bill rate × 100
- Equivalent day rate(Salary ÷ annual billable hours) × hours per billing day
- Freelance hourly rate calculatorCover your income goal with your real schedule
- Package investment rangeSessions × rate with discounts & optional intensives
- Project gross margin(Fee - cost) / fee x 100
- Suggested monthly retainer(Hours x rate) x (1 + overhead) x (1 + margin)
Business calculators
View all →- Allocated deductible portion (model)Annual expenses × (office sq ft ÷ total sq ft)
- Capacity-based monthly revenueProviders x slots/day x days x show rate x avg ticket
- Completion rateCompletes ÷ starts × 100
- Engagement rateEngagements ÷ impressions × 100
- Estimated account capacityCSMs x accounts per CSM
- Estimated monthly support savingsTickets x deflection % x cost per ticket
- Estimated monthly transferViews × page weight × overhead buffer
- Estimated no-show revenue lossBooked appointments x no-show% x average ticket