Calculators and generators for Etsy, KDP, and Notion sellers — no signup required.
Every one of these runs entirely in your browser — no account, no email capture, no paywall. They exist because the numbers that decide whether a digital product business is profitable (Etsy's real fee stack, KDP's marketplace royalty math, what a Notion template can actually charge) are scattered across forum threads, outdated blog posts, and Etsy's own help center, which does not do the arithmetic for you. Each tool below pulls those numbers into one place and does the math live as you type.
Calculates transaction fee (6.5%), listing fee ($0.20), and payment processing (3% + $0.25) to show your real net profit per sale.
Open calculator →Enter your ad spend and revenue to see ROAS, cost per sale, and break-even margin — know if your Etsy Ads are actually profitable.
Open calculator →Paste your title and tags to spot keyword stuffing, duplicate tags, and wasted slots — before you publish, not after.
Open checker →Enter your niche and get shop name ideas that already fit Etsy's 4-20 character, letters-and-numbers-only rule.
Open generator →Compliant message templates for review requests — no incentive language, matches Etsy's anti-shilling policy.
Open generator →A starting draft modeled on Etsy's own Seller Handbook guidance — GDPR sections included if you sell to the EU/UK.
Open generator →Upload your listing photo to see how it looks as a small search thumbnail — plus a check on minimum resolution.
Open tool →Enter your niche, product type, and audience to instantly generate 5 SEO-optimized Etsy listing titles under 140 characters.
Open generator →One seed keyword becomes grouped clusters by buyer intent, audience, occasion, style and format — plus 13 tags that already fit Etsy's 20-character limit.
Open generator →Pick an Amazon KDP category and see how hard it is to break into — scored from real Best Sellers data, with the median review-count entry bar shown in full.
Open checker →Enter your price and see where it sits against real listed prices for comparable digital products — percentiles from public Gumroad listings, updated weekly.
Open tool →See how saturated a Notion template category already is, and what comparable templates actually sell for on Gumroad — so you build where there is room.
Open finder →Enter trim size, page count, and price to get exact Amazon KDP royalty across US, UK, EU, CA, and AU marketplaces.
Open calculator →Real Notion template pricing benchmarks by profession and complexity, with Etsy and Gumroad fee comparisons for 2026.
See pricing data →The repeatable Pinterest content strategy for digital product sellers — pin types, board SEO, seasonal timing, and AI pin generation.
Read the strategy →Enter page count and paper type to get exact spine width in inches and mm, plus full cover size with bleed — verified against Amazon's own formula.
Open calculator →Pick your book type to see the recommended KDP trim size and matching BISAC subject categories, verified against Amazon KDP and the Book Industry Study Group.
Open picker →Enter one target price and see your net take-home on Etsy, Gumroad, and KDP side by side, using each platform's current published fee schedule.
Open calculator →Convert standard paper sizes (US Letter, A4, A5, and more) to inches, mm, and 300 DPI pixels, with typical bleed and margin guidance.
Open converter →Month-by-month retail and gifting seasonality mapped to Etsy printables, KDP books, and Notion templates — know when to launch each product type.
See the calendar →Audit all 13 Etsy tag slots in real time — character limit compliance, multi-word phrasing depth, and 1-click comma-separated copy.
Open heatmap →Etsy charges three separate fees on every digital download sale: a 6.5% transaction fee, a $0.20 listing fee that auto-renews on each sale, and payment processing of 3% + $0.25 for US sellers (rates vary by country). Stacked together, the effective take is roughly 10.5–14% of the sale price depending on how high that price is — the two flat-fee components (the $0.20 listing fee and the $0.25 processing fee) matter proportionally more on cheap listings than expensive ones.
The calculator runs all three fees plus optional Offsite Ads (12–15%, mandatory above $10k in annual shop revenue) live as you type, across five country presets, and projects your monthly take-home from a given sales volume.
Open the Etsy Fee Calculator →Etsy listing titles have a 140-character limit and get scanned by both Etsy's search algorithm and a shopper skimming a grid of thumbnails — those are two different audiences with different needs, and most sellers optimize for only one. The generator takes your niche, product type, and target audience and produces five title variants that lead with the primary keyword (for search) while staying readable (for the human deciding whether to click).
Amazon KDP pays royalties on low-content books (journals, planners, log books) based on list price minus a printing cost that scales with page count and trim size, and the formula differs by marketplace (US, UK, EU, CA, AU each have their own printing cost tables and currency). A book priced without checking the printing cost first can end up paying the author only a dollar or two per sale, or in the worst case a negative royalty on oversized page counts.
Enter trim size, page count, and list price once and the calculator returns the exact royalty across all five major marketplaces side by side.
Open the KDP Royalty Calculator →Notion templates are notoriously hard to price because there's no built-in marketplace comparable to Etsy's completed-listing data — sellers either underprice a genuinely complex system (a multi-database CRM) at the same rate as a single-page tracker, or overprice a simple template because a competitor's dashboard sold well at a higher price. This guide benchmarks real Notion template pricing by category (trackers, dashboards, planners, CRMs) and complexity, and compares what you keep after Etsy's and Gumroad's respective fee structures on the same sale.
See the Notion pricing data →Pinterest functions as a visual search engine rather than a social feed, which means the strategy that works there — board SEO, pin types matched to buyer intent, seasonal posting timed months ahead of the actual holiday — is closer to SEO than to Instagram-style content marketing. Most Etsy sellers treat Pinterest as an afterthought and post inconsistently, which is exactly why a repeatable system outperforms sporadic effort.
Read the Pinterest strategy →Amazon KDP calculates spine width as page count multiplied by a per-page thickness coefficient that depends on paper type: 0.002252" for white paper, 0.0025" for cream paper, and 0.002347" for premium color paper — straight from KDP's own published formula, with no separate fixed base added.
The calculator also returns your full cover width and height with KDP's required 0.125" bleed built in, and flags whether your page count qualifies for spine text (KDP requires at least 79 pages).
Open the KDP Spine Width Calculator →KDP currently supports 16 paperback trim sizes, and choosing the wrong BISAC subject category can bury an otherwise well-designed book in the wrong part of Amazon's catalog. This picker maps common low-content book types (journals, planners, coloring books, notebooks, puzzle books, budget trackers) plus general fiction and nonfiction to a recommended trim size and matching BISAC codes, verified against Amazon KDP's and the Book Industry Study Group's current published lists.
The same list price nets very different take-home pay depending on where you sell it. This calculator runs one target price through Etsy's digital-download fee stack, Gumroad's flat 10% + $0.50 direct-sale fee, and KDP's tiered paperback royalty formula (50%/60% rate split plus a page-count-dependent printing cost), so you can compare platforms side by side instead of guessing.
Printable sellers constantly need the same handful of paper-size conversions — US Letter, A4, A5, and a few common photo/card sizes — in inches, millimeters, and pixels at print resolution, plus a sane default for bleed. This converter keeps all of that in one place instead of re-deriving it from scratch every listing.
Etsy printables, KDP books, and Notion templates don't share the same seasonal rhythm — Etsy tracks physical gifting occasions closely, KDP books have real shipping cutoffs that cut off gift-book demand sharply, and Notion templates track productivity-reset moments like New Year and back-to-school more than traditional holidays. This calendar lays out month-by-month seasonality for all three verticals side by side.
See the Seasonal Calendar →