Tools & Resources

Spread­sheets

Bitcoin in Excel — No macros. No add-ins. No arrays.

Open, transparent spreadsheets for learning and working with Bitcoin cryptography, mining, key generation, and more.

Featured

F9Miner
Mine bitcoin in Microsoft Excel — no macros, no add-ins, no arrays
16MB · Educational · Blazingly slow at ~1 hash/second 🤣
Info & Download Free
ECDSA
secp256k1 for Bitcoin in Excel — no macros, no add-ins, no arrays
49MB binary version · 200MB+ decimal version
Info & Download Free

Cryptography

ECDSA
secp256k1 for Bitcoin in Excel — no macros, no add-ins, no arrays
49MB binary · 200MB+ decimal
Info & Download Free
SHA256
Expandable chunk spreadsheet — no macros, no add-ins, no arrays
Download Free
RIPEMD-160
Two chunk spreadsheet — no macros, no add-ins, no arrays
Download Free
Keys & Addresses
24 word private key conversion — WIF, PKH, BIP39 seed phrase, P2PKH, P2WPKH (bech32)
Download Free
256-bit Converter
Binary ↔ Decimal ↔ Hexadecimal conversion spreadsheet
Download Free

QR Codes

QR Codes
Convert data to QR code without internet connection
Version 2, 5, 15 · Byte mode · L, M, Q & H EC · Mask 0 · 7.8MB
Download Free
QR Codes Lite
Versions 2 & 5 only (25×25 & 37×37) — Low EC, byte mode, mask 0
<1MB · No macros, no arrays, no add-ins
Download Free
SeedSigner CompactQR
SeedSigner CompactQR generator — no macros, no arrays, no add-ins
<1MB
Download Free

Seed Phrases

Nostr nsec / npub
Generator and converter — bech32, hex, and decimal
Download Free
Seed Phrase Options
12th and 24th seed phrase word options — no macros, no arrays
Download Free
GENESIS MINI
128-bit binary to 12 word seed phrase — no macros, no arrays
Download Free
GENESIS
256-bit binary to 24 word seed phrase — no macros, no arrays
Download Free

Math Demos

Decimal Multiplication
256 digit numbers — expandable Excel demo spreadsheet
Download Free
Binary Addition & Subtraction
Expandable demo spreadsheet
Download Free

Professional

F9Miner
Mine bitcoin in Microsoft Excel — no macros, no add-ins, no arrays
16MB · Educational
Info & Download Free
Bitcoin Mining Evaluation
Business evaluation — mining vs. purchase, v.9k
Bitcoin Magazine DP Methodology ↗
₿ Inquire
Mining P&L
Track daily, monthly, annual and life-to-date performance
Pool mining or independent miners
₿ Inquire
BTC Live Pricing Blotter
Arb-and-trade — multi-platform, multi-currency spreadsheet
₿ Inquire
Excel Training
One-on-one — be more efficient, speed up your work
BTC only · Contact us for pricing
Syllabus ₿ Inquire

On-chain & Off-chain Donations · via BTCPay

LNURL Off-chain

LNURL donation QR

BOLT-12 Off-chain

BOLT-12 donation QR

Modulo Keys

Your key.
In steel.

Physical Bitcoin keys — stainless steel, zero electronics, generational storage.

Visit the Store  →