The best is to put all equipment on the kitchen scales and write such a list here.
Like this you really see how the weight of your rucksack content adds up.
You try to keep it as light as possible and do not carry things "just in case". You think about, what you really need and leave at home what you don't need.
This here isn't the minimum, its approximately the maximum what could be neccessary:
KARRIMOR 65 LITRES (+ 2x 2 ltr pouches)
Alpineste 2100g
Berghaus 2x side pouches 310 g
Main compartment:
Outside liner: (at your back)
German army mat 335g
(Fiskars Axe 1070g)
British army insertion bag small 50g,
on top of the tarp, contains:
Goretex jacket Austrian army M65// 1279g
In its left chest pouch outside
Solognac foldable waterproof cap 81g
DD tarp bag 13g
Tarp DD Superlight 3x3m 463g
Washing line 31g
Tarp lines Edelrid 2,5 mm 103g
4 tarp stakes DD with brown bag 46g
Dry bag with food, Ortlieb, olive green
British army insertion bag large 123g
contains:
Snugpak polycotton liner 294g
Sleeping bag, Snugpak 1758g
Bivvy bag Snugpak SF 340g
(US Army cotton case)
British army insertion bag small 50g,
used as a pillow, contains:
1× Socks 50g
1x Under breefs 56g
1x T-shirt, civil, 129g
Fleece jacket Solognac 100// 332g
in its right pocket
Fleece hat Solognac 29g
(Long Johns Solognac 100 Fleece ? 185g
Gloves Solognac liner 34g
(Leather gloves)
Side pouch left:
Crusader mug, stainless steel, 289g
Plastic lid BCB 32 g
(Covered in a usual freezer bag) 14g
Osprey canteen with plastic cup 298g
Crusader bail 26g
Gaiters, British Army DPM, 470g
Side pouch right:
Mug, TBS 750 ml, stainless steel with bag 224g
(Covered in a usual freezer bag) 15g
Bottle, Nagelne, stainless steel 398g
Toilet paper in dry bag 186g
Raintrousers Solognac 100, rolled, 249g
Folding saw, Bahco Laplander, 193g
Lower lid pocket:
Dutch wash pouch 152g
with kitchen stuff:
Lighter, UCO stormproof, 98g
Candle wrapped in kitchen foil ? g
British army Hexamine stove + fuel 378g
Spoon, civil stainless steel, 29g
Victorinox Compact, 64g
Cotton handkerchief as pot holder 38g
Stainless steel spreader for bottle 43g
(Spices)
(Tea bags in zipp lock freezer bag)
(Instant coffee in 0,25 ltr bottle)
Alcohol gel 54g
(Hiking map in zipp lock freezer bag)
Mora Garberg 169g
leather sheath TBS 72g
Upper lid pocket:
First aid kit 112g
including Whistle 10g
Solognac X-Access Organizer S 100g
in 3 larger loops:
Head lamp Petzl e+ lite 27g
Compass Silva Ranger SL 24g
Mosquito head net Sea to Summit Nano 25g
behind the zipper:
(DC4 sharpening tool 65g)
Spare batteries in small plastic bag 7g
(2x Spare trousers buttons 5g)
(Aluminium capsule (waterproof) with green polyester thread wrapped around a match and Sewing needles 56g
In smaller loops:
2x Lighter Bic mini orange+pink x11g = 22g
Ferrocerium rod, light my fire army 50g
Solognac X-Access Organizer S 100g
In the lid loops:
Toothbrush, folding ? 15g
Toothpaste ? 20g
behind it:
Sea to Summit body wash soap 89ml. 100g
in the main compartment:
Nabaji Towel size S black 45g
bug repellant 102g
Waterproof pouch Caperlan 32g
contains cable and charger. weight 110g
Waterproof pouch Caperlan 32g
contains smartphone. weight 190g
Under the flap:
British army roll mat 624g
Rucksack in total: 14.574 g
On the man:
Wool socks British army 136g
Boots Altberg brown Defender 1434g
Breefs, thin cotton weight 56g
Trousers 597g
Leather belt 163g
Wallet 66g
House keys 73g
Car keys 40g
Wrist watch, 93g
T-shirt 129g
German army field shirt 403g
Fleece jacket Solognac 300// 459g
in its left pocket
Larch hat Solognac 300 // 74g
(British army smock 1166g)
On person = 4.890 g
With additional 2 litres of water you have in this example above 16.574g on your back, and with food in a dry bag that you can hang animal protected in a tree, you reach round about 18 kg what is the absolute limit that most persons are able to carry over longer distances.
That means, the example above is a nice equipment for a static camp but the list should be shortened for trekking tours.
14 to maximum 16 kg total rucksack weight should be OK in winter conditions, in the summer 10 to 12 kg should be your goal.
And especially if one needs to buy new equipment it is really sensible to keep the weight of every single item in mind!